200846571 九、發明說明： 【發明所屬之技術領域】 本發明係為一種外循環式滾珠螺桿，尤指一種切線外 循環式滾珠螺桿。 【先前技術】 現今的滾珠螺桿於工業方面之應用愈來愈多，除了作 為線性進給傳動的高精密度效果之外，其他更有摩擦耗損 率小、能量轉換率高、噪音小及高剛度不易損壞等優點， 因此，滾珠螺桿對於現今各種工業應用機具等重要性也不 言可喻。 承上，由於要讓螺帽可無限次的在螺桿上往復運動， 就必須設有循環裝置始滾動體可無限次循環於滾動溝槽 中，而習知主張循環裝置設計如··美國專利US3661030等 案，然，該循環裝置之迴流路徑都會有彎曲處，當滾動體 在高速運行的情況下，不斷的衝擊指曱及迴流路徑之彎曲 處（撞擊處），使得指曱及該撞擊處之強度漸漸減弱，進 而使滾動體間夾雜因撞擊所剝落的迴流元件之殘骸，而引 響滾動體循環之順暢性，故循環裝置的破壞是滾珠螺桿相 當常見的失效狀況之一。 200846571 於是，目前業界為解決前述之問題，所提出的解決 方法將彎管由切線方向插入螺紋執道之設計，如： 美國專利US3971264循環裝置的設計方式，是以多 截式彎管組合而成，其彎管因為組合式故其結構較不穩 固；而且該螺帽之管孔方向同為導程角方向，故該管孔 加工時需用到多軸加工機旋轉螺帽位置，方可加工至需 要孔位，故此項的加工難度會較高。以及； ⑩ 美國專利US4953419循環裝置其彎管係設有兩彎曲 之迴流道，故該彎曲部份於製造上之尺寸較難以控制；另 該螺帽之管孔加工方式之問題點與上述專利相同；且該循 環裝置之固定方式，藉由螺帽外徑上之固定片將其固定， 其固定方式較為不穩固，並且增加螺帽外徑尺寸。以及； 美國專利US2003/0213323該循環裝置係藉由多塊元 件組合的方式所構成，需多種模具來應映元件需求，故造 • 成了模具設計成本提高，且該循環裝置以組合方式之設計 其裝配時間也增加；且當循環裝置所需元件變多時，則該 循環裝置内部滾動件於高速運動時，容易造成元件之間的 ， 振動，進而產生不明的噪音。 . 另外，以上三種習知切線外循循環裝置係有一共通的 問題點，於循環裝置安裝於螺帽上時不易對位，且於組裝 彎管時，該彎管係插設於大於該彎管之安裝孔内，故該彎 6 200846571 管與安裝孔之_在有卿:，使異物與灰塵容祕由縫隙 侵入螺帽内部’進而5丨響滾珠螺桿循環的順暢度，嚴重則 造成滾珠螺桿損壞等。 【發明内容】 基於上述驾知連結器之問題點，本發明人經過研究改 良後’終有確能達成以下發明之目的之發明誕生。200846571 IX. Description of the Invention: [Technical Field of the Invention] The present invention relates to an outer circulation type ball screw, and more particularly to a tangential outer circulation type ball screw. [Prior Art] Today's ball screws are used more and more in the industrial field. In addition to the high precision effect of the linear feed drive, other friction loss rate, high energy conversion rate, low noise and high rigidity are also available. It is not easy to damage, so the importance of the ball screw for today's various industrial applications is not to mention. In order to allow the nut to reciprocate on the screw indefinitely, it is necessary to have a circulation device to start the rolling body in an infinite number of cycles in the rolling groove, and the conventional design of the circulation device is as follows: US Pat. No. 3,661,030 In the case of the case, the return path of the circulation device will have a bend. When the rolling element is running at a high speed, the bending point of the impact finger and the return path (impact point) is continuously caused, so that the finger and the impact point are The strength is gradually weakened, and the entanglement of the rolling elements is caused by the entanglement of the reflow elements which are peeled off by the impact between the rolling elements, so that the destruction of the circulation device is one of the most common failure conditions of the ball screw. 200846571 Therefore, in order to solve the above problems, the proposed solution is to insert the elbow into the threaded direction from the tangential direction. For example, the design method of the US patent US3971264 circulation device is a combination of multi-section bending tubes. Because the structure of the elbow is not stable because of the combination, and the direction of the tube hole of the nut is the direction of the lead angle, the position of the rotating nut of the multi-axis processing machine is required for the processing of the tube hole, and the processing can be processed. The hole is required, so the processing difficulty of this item will be higher. And 10 US U.S. Patent No. 4,953, 419, which has two curved return passages, so that the curved portion is difficult to control in manufacturing; and the problem of processing the tube hole of the nut is the same as the above patent. And the fixing manner of the circulation device is fixed by the fixing piece on the outer diameter of the nut, the fixing manner thereof is relatively unstable, and the outer diameter of the nut is increased. And US Patent No. 2003/0213323, the circulation device is composed of a plurality of components, and requires a plurality of molds to meet the requirements of the components, so that the cost of the mold design is improved, and the circulation device is designed in combination. The assembly time is also increased; and when the number of components required for the circulation device is increased, the internal rolling elements of the circulation device are likely to cause vibration between the components when moving at a high speed, thereby generating unclear noise. In addition, the above three conventional tangential external circulation devices have a common problem. When the circulation device is mounted on the nut, it is not easy to align, and when the curved pipe is assembled, the curved pipe is inserted in the larger than the curved pipe. The installation hole, so the bend 6 200846571 pipe and mounting hole _ in the Qing:, so that foreign matter and dust secrets from the gap into the inside of the nut 'and then 5 丨 ring ball screw cycle smoothness, severely caused by the ball screw Damage, etc. SUMMARY OF THE INVENTION Based on the above-mentioned problem of the driver, the inventors of the present invention have been researched and improved, and the invention has finally achieved the object of the following invention.
即，本發明首要目的在於，使螺帽之管孔加工容易， 不需使用特殊機械（例如：多軸加工機等機械）即可加工； 另使循環裝置利於生產製造。 本發明次要目的在於，減少循環裝置之零配件，並使 循環裝置具有自潤功效。 本發明再-目的在於，使循環裝置與螺帽之安裝孔 合後，兩者之間無縫隙產生’以防止異物入侵螺帽㈣ 為達上述之目的，本發明係為一種外循環式滾珠虫零 桿’其中之螺帽係為-中空結構，其内緣設有滾動槽， 套設於外毅有相賴賴叙滾料的螺#上，該滾 槽及滾動溝之_容置有若干賴件；另，該螺帽特 設有一平面，解面上設有若干安纽及若干螺絲孔， 係貫穿該平面，而藉㈣平面之設計，使得加 女，不須使用多轴加工機即可加工。其中之循環壯' 係藉由兩半循環裝置組成，該兩半循環裝置係藉由 7 200846571 件與第二元件所組成；該半循環裝置係設有半迴流管、定 位部、一油槽、半固定部；該半迴流管内設有一延伸至該 定位部之半迴流道，該半迴流道上係設有一吸收該油槽之 潤滑油的潤滑件；該定位部係設有一導引滾動件進入該半 迴流道之指甲；該半固定部上係設有半固定孔；藉此，係 將該兩半循環裝置裝之定位部安裝於該安裝孔内，因該定 位部之外型係完全相對該安裝孔之内輪廓所設計，故於配 合後係完全將該安裝孔填滿，以防止異物入侵螺帽内部； 該兩半循環裝置組合後，該兩半迴流管係組成一完整之迴 流管，以供滾動件循環迴流，且藉由該潤滑件與滾動件 接，達到潤滑之功效。 為了更進一部瞭解本發明之特徵及技術内容，請參閱 以下有關本發明之實施方式說明及圖式，然而此實施方式 及圖式僅供說明及參考用，而非用以對本發明做任何限制 者。 【實施方式】 本發明之實施例請參閱第一圖至第七圖所示，本發明 係為一種外循環式滾珠螺桿，係包含有： 一螺桿1，其上係設有滾動溝1 1 ; 一螺帽2，係為中空結構，其内緣係設有相對該滾動 8 200846571 溝1 1之滾動槽2 2;其係套設於該螺桿1上並於上作往 復運動；且該螺帽2外緣係設有一平面2 1，該平面2 2 上設有若干安裝孔2 2 1及若干螺絲孔2 3，該安裝孔2 2 1係貫穿該平面2 2 ; • 若干滾動件R，係容置於該滾動槽2 1及滾動溝1 1 所構成之滾動路徑D中； 一循環裝置9 9，係由兩半循環裝置3所組成，該半 ⑩ 循環裝置3係由第一元件3 A及第二元件3 B所組成； 請參閱第四A、B圖，該第一元件3 A，其上係設有 一第一導管3 1 A、第一定位部3 2 A、半固定部3 3 A、油槽32 1A及第一配合面34A;該第一導管3 1 A係與該第一定位部3 2 a銜接，其係設有第一半迴流道 3 1 1 A ’ $亥苐一半迴流道3 1 1A係延伸至該第一定位 3 2 A係概呈L型設置’且該第一半迴流道3 1 1 A上 _ 係設有一與該油槽3 2 1A相連通之容置孔3 2 3 a，係 供一潤滑件3 2 2 A設置其中，使該潤滑件3 2 2 A吸收 該油槽3 2 1 A之潤滑油，該半固定部3 3 A上係設有一 • 半固定孔3 3 1 A ;該油槽3 2 1A上係蓋設有一槽蓋 - 4，如此一來可方便使用者添加潤滑油且防止外溢；That is, the primary object of the present invention is to make the tube hole of the nut easy to process, and it is not necessary to use a special machine (for example, a machine such as a multi-axis machine); and the circulation device is advantageous for manufacturing. A secondary object of the present invention is to reduce the components of the circulation device and to make the circulation device self-lubricating. A further object of the present invention is to make the circulation device and the mounting hole of the nut have no gap between them to prevent foreign matter from invading the nut (4), and the present invention is an external circulation type ball worm. The zero-rod's one of the nuts is a hollow structure, and the inner edge is provided with a rolling groove, which is arranged on the snail # of the outer slanting slag, and the sump and the rolling groove are accommodated In addition, the nut is specially provided with a plane, a plurality of hinges and a plurality of screw holes are arranged on the solution surface, and the plane is penetrated through the plane, and the design of the plane is made by the (four) plane, so that the multi-axis processing machine can be used without adding a multi-axis processing machine. machining. The circulation is composed of two half-cycle devices consisting of 7 200846571 and a second component; the semi-circulation device is provided with a semi-return pipe, a positioning portion, an oil groove, and a half a fixing portion; a semi-returning passage extending to the positioning portion is disposed in the semi-returning pipe, wherein the semi-returning passage is provided with a lubricating member for absorbing the lubricating oil of the oil groove; the positioning portion is provided with a guiding rolling member to enter the half-returning portion a semi-fixed hole is formed on the semi-fixed portion; thereby, the positioning portion of the two-half circulation device is installed in the mounting hole, and the type is completely opposite to the mounting hole The contour is designed so that the mounting hole is completely filled after the fitting to prevent foreign matter from invading the inside of the nut; after the two half-circulation devices are combined, the two-half returning pipe system constitutes a complete return pipe for The rolling member is circulated and recirculated, and the lubricating member is connected to the rolling member to achieve the lubricating effect. For a better understanding of the features and technical aspects of the present invention, reference should be made to the description of the embodiments of the invention. By. [Embodiment] Embodiments of the present invention, as shown in the first to seventh figures, the present invention is an external circulation type ball screw, comprising: a screw 1 having a rolling groove 1 1 thereon; a nut 2 is a hollow structure, and an inner edge thereof is provided with a rolling groove 2 2 opposite to the groove 8 200846571; the sleeve is sleeved on the screw 1 and reciprocated thereon; and the nut 2, the outer edge is provided with a plane 2 1, the plane 2 2 is provided with a plurality of mounting holes 2 2 1 and a plurality of screw holes 2 3 , the mounting holes 2 2 1 are through the plane 2 2; • a plurality of rolling elements R, It is accommodated in the rolling path D formed by the rolling groove 2 1 and the rolling groove 1 1 ; a circulation device 9 9 is composed of two half-circulation devices 3 which are composed of the first element 3 A And the second component 3 B is composed; refer to the fourth A, B diagram, the first component 3 A is provided with a first conduit 3 1 A, a first positioning portion 3 2 A, and a semi-fixing portion 3 3 A, the oil groove 32 1A and the first mating surface 34A; the first duct 3 1 A is engaged with the first positioning portion 3 2 a, and is provided with a first half return channel 3 1 1 A ' The semi-return channel 3 1 1A extends to the first positioning 3 2 A system is generally L-shaped setting 'and the first half-return channel 3 1 1 A is provided with a receiving connection with the oil groove 3 2 1A The hole 3 2 3 a is provided with a lubricating member 3 2 2 A, wherein the lubricating member 3 2 2 A absorbs the lubricating oil of the oil groove 3 2 1 A, and the semi-fixed portion 3 3 A is provided with a half The fixing hole 3 3 1 A; the oil groove 3 2 1A is provided with a groove cover 4 on the cover, so that the user can conveniently add lubricating oil and prevent overflow;
請參閱第五A、B圖，該第二元件3 b，其上係設有 一第二定位部3 2 B、第二導管3 1 B、半固定部3 3 B 200846571 及第二配合面3 4 B，該第二定位部3 2 B上係設有一弓丨 導滚動件R之指甲3 2 1 B，該指曱3 2 1 B係朝該螺帽 2之滾動槽2 2凸伸且嵌置定位；該第二導管3 i B係與 該第一疋位部3 2 B銜接，其係設有第二半迴流道3 1 1 B忒第一半迴流道3 1 1 b係延伸至該第二定位部3 2 B係概呈L型設置，該半蚊部3 3 6上係設有一半固定 孔 3 3 1 B ; 以上所述為各元件細部說明及其相互搭配關係， 以下說明本實施例之實施方式： 首先，將該第一元件3A之第一貼合面3 4A與 第二元件3 B之第二貼合面3 4 B相互對接配合後 (該配合方式可於該第一貼合面3 4A與第二貼合面 3 4 B上各設有凸部及凹部相互插合固定的方式組 裝’或使用黏著劑塗抹在第一貼合面3 4八與第二貼 合面3 4 B上以黏接方式組合），組成該半循環裝置 3，而該半循環裝置3係設有，由第一定位部32八 與第二定位部3 2 B所組成之定位部3 2 ;由該第一 ‘ ί 3 1 A與第二導管3 1 B組成之半迴流管3 1， 該半迴流管3 1内係具有延伸至該定位部3 2之半迴 流道3 1 1 (係由第一半迴流道3 i 1 a及第二半迴 流道3 1 1 B組成），該半迴流道3 i i延伸於定位部 200846571 3 2的部分係與該滾動路徑D之螺旋角的角度平行，並 且沿著該滚動路徑D之螺紋線的切線方向設置，如此設計 係能降低滾動件R於運行時對於半迴流道311的衝擊 力道，以提局循J哀的順暢度； 再者，分別將該兩半循環装置3之定位部3 2安 φ 裝至該螺帽2所設之安裝孔22 1内，進而使該兩半迴 流官3 1係呈相對接合狀態而形成一完整的迴流管9 9 2，該迴流管9 9 2内係具有一迴流道9 9 2 i (係由兩 半迴流道3 1 1所構成）；該第一元件3 a之半固定部3 3 A與第二it件3 B之半固定部3 3 B同樣係呈相對接 合狀態而形成一完整的固定部9 9 χ，該固定部上係具有 -固定孔9 9 1 1 (係由兩半固^孔3 3 i A、3 3工B 應 所構成）； 最後’藉由固定件G穿設該固定部9 g工之固定孔9 9 1 1後’再與螺帽2之螺絲孔2 3螺合鎖固，如此一來 即完成該循環裝置9 9安裝。該循環裝置9 9安震完成 後，該迴流道9 9 2 1係銜接該滚動路_ (如第七圖所 示），使滚動件R可無祕滾動迴。料值得一提 11 200846571 的是’當滚動件R進入該迴流道9 9 2 1時，會與該迴流 運上之潤滑件3 2 2 A接觸，進而將潤滑件3 2 2 a上之 潤滑油傳遞至滾動件R上而達到潤滑之效果。 綜所上述，本發明係解決習知技術之間題點，使得生 產者於裝配滾珠螺桿時所須時間縮短，且提升滾珠螺桿的 順暢度，另外，本發明一併將潤滑裝置整合至循環裝置 上，使滾珠螺桿不_外裝設賴裝置，以節省螺=使 用空間，所以本發明之『具有產f之可利用性』應已毋庸 置疑，除此之外’在本案實施例所揭露出的特徵技術，於 申明之剷並未冒見於諸刊物，亦未曾被公開使用，不但具 有如上所述功效增進之事實，更具有何輕㈣附： 效，是故’本發明的『新穎性』以及『進步性』都已符合 專利法規’爱依法提出發明專利之申請，祈請惠予審查並 早曰賜准專利，實感德便。 以上所述實施例之揭示係用以說明本發明，並非用以 限制本發明’故舉凡數值之變化與等效元件之置換，仍應 隸屬本發明之範疇。 b 12 200846571 【圖式簡單說明】 第一圖為本發明外循環式滾珠螺桿立體圖。 第二圖為本發明循環裝置立體圖。 第三圖A為本發明半循環裝置立體圖。 第三圖B為本發明半循環裝置立體圖。 第四圖A為本發明第一元件立體圖。 第四圖B為本發明第一元件立體圖。 ⑩ 第五圖A為本發明第二元件立體圖。 第五圖B為本發明第二元件立體圖。 第六圖為本發明螺帽立體圖。 第七圖為第一圖A—A剖面圖。 【主要元件符號說明】 1 螺桿 2 螺帽 11 滾動溝 2 1 切平面 2 2 滾動槽 221 安裝孔 2 3 螺絲孔 99 循環裝置 991 固定部 9911 固定孔 992 迴流管 9921 迴流道 13 200846571 3 半循環裝置 31 半迴流管 311 半迴流道 3 2 定位部 3 A 第一元件 3 1 A 第一導管 3 1 1 A 第一半迴流道 3 2 A 第一定位部 3 2 1 A 油槽 3 2 2 A 潤滑件 3 2 3 A 容置孔 3 3 A 半固定部 3 3 1 A 半固定孔 3 4 A 第一配合面 3 B 第二元件 3 1 B 第二導管 3 1 1 B 第二半迴流道 3 2 B 第二定位部 3 2 1 B 指甲 3 3 B 半固定部 3 3 1 B 半固定孔 3 4 B 第二配合面 R 滾動件 4 槽蓋 G 固定件Referring to FIGS. 5A and B, the second component 3 b is provided with a second positioning portion 3 2 B, a second conduit 3 1 B, a semi-fixed portion 3 3 B 200846571 and a second mating surface 3 4 . B, the second positioning portion 3 2 B is provided with a nail 3 2 1 B of a bow guide roller R, and the finger 3 2 1 B is protruded toward the rolling groove 2 2 of the nut 2 and embedded Positioning; the second conduit 3 i B is engaged with the first clamping portion 3 2 B, and is provided with a second half return channel 3 1 1 B忒 The first half return channel 3 1 1 b is extended to the The second positioning portion 3 2 B is generally disposed in an L shape, and the half mosquito portion 3 3 6 is provided with a half fixing hole 3 3 1 B; the above description is a detailed description of each component and their mutual relationship, the following description Embodiments of the first embodiment: First, the first bonding surface 34A of the first component 3A and the second bonding surface 3 4B of the second component 3B are mated to each other (the cooperation mode is applicable to the first The bonding surface 3 4A and the second bonding surface 3 4 B are respectively provided with a convex portion and a concave portion which are inserted and fixed to each other, or are attached to the first bonding surface 3 4 8 and the second bonding surface by using an adhesive. 3 4 B is bonded in a bonding manner The semi-circulating device 3 is formed, and the semi-circulating device 3 is provided with a positioning portion 3 2 composed of a first positioning portion 32 and a second positioning portion 3 2 B; by the first ' ί 3 1 A a half-return pipe 3 1 composed of a second conduit 3 1 B having a half-return channel 31 1 extending to the positioning portion 3 2 (by the first half-return channel 3 i 1 a And a second half return runner 3 1 1 B), the portion of the semi-return runner 3 ii extending to the positioning portion 200846571 3 2 is parallel to the angle of the helix angle of the rolling path D, and along the rolling path D The tangential direction of the thread line is set, so that the impact force of the rolling element R on the half return flow path 311 during operation can be reduced to improve the smoothness of the J sorrow; further, the positioning of the two half cycle device 3 is respectively performed. The portion 3 2 φ is mounted in the mounting hole 22 1 of the nut 2, so that the two half-returning members 3 1 are in a relative engaged state to form a complete return pipe 9 9 2 , the return pipe 9 9 2 The inner system has a return passage 9 9 2 i (consisting of two halves of the return passage 31 1); the semi-fixed portion 3 3 A of the first element 3 a and the second it The semi-fixed portion 3 3 B of the piece 3 B is also in a relatively engaged state to form a complete fixing portion 9 9 χ, and the fixing portion has a fixing hole 9 9 1 1 (the two-half fixing hole 3 3 i A, 3, 3, B, should be constructed;) Finally, the fixing hole 9 is passed through the fixing member 9 to fix the hole 9 9 1 1 and then screwed to the screw hole 2 3 of the nut 2 In this way, the installation of the circulation device 9 is completed. After the circulation device 9 9 is completed, the return passage 9 9 2 1 is engaged with the rolling path _ (as shown in the seventh figure), so that the rolling member R can be rolled back without secret. It is worth mentioning that 11 200846571 is 'When the rolling element R enters the return passage 9 9 2 1 , it will come into contact with the lubricating element 3 2 2 A which is returned from the return flow, and then lubricate the lubricating part 3 2 2 a The oil is transferred to the rolling element R to achieve the effect of lubrication. In view of the above, the present invention solves the problems between the prior art, so that the time required for the manufacturer to assemble the ball screw is shortened, and the smoothness of the ball screw is improved. In addition, the present invention integrates the lubricating device into the circulation device. In the above, the ball screw is not externally installed to save the screw = use space, so the "utilization of the production of the invention" of the present invention should be undoubted, except that it is revealed in the embodiment of the present invention. The characteristic technology, the shovel of Shenming has not been seen in publications, and has not been used publicly. It not only has the fact that the effect is improved as described above, but also has the lightness of (4) attached: effect, which is the "novelty" of the present invention. And "progressive" has been in line with the patent law 'love to apply for invention patents according to law, pray for review and early grant of patents, and really feel good. The above description of the embodiments is intended to be illustrative of the invention and is not intended to limit the scope of the invention. b 12 200846571 [Simple description of the drawings] The first figure is a perspective view of the outer circulation type ball screw of the present invention. The second figure is a perspective view of the circulation device of the present invention. Figure 3A is a perspective view of the semi-circulating device of the present invention. Figure 3B is a perspective view of the semi-circulating device of the present invention. Figure 4A is a perspective view of the first element of the present invention. Figure 4B is a perspective view of the first element of the present invention. 10 Figure 5A is a perspective view of a second component of the present invention. Figure 5B is a perspective view of a second component of the present invention. The sixth figure is a perspective view of the nut of the present invention. The seventh picture is a cross-sectional view of the first figure A-A. [Main component symbol description] 1 Screw 2 Nut 11 Rolling groove 2 1 Cutting plane 2 2 Rolling groove 221 Mounting hole 2 3 Screw hole 99 Circulating device 991 Fixing part 9911 Fixing hole 992 Return pipe 9921 Return path 13 200846571 3 Half cycle device 31 Half return line 311 Half return line 3 2 Positioning part 3 A First element 3 1 A First duct 3 1 1 A First half return line 3 2 A First positioning part 3 2 1 A Oil tank 3 2 2 A Lubricating part 3 2 3 A accommodating hole 3 3 A semi-fixing part 3 3 1 A semi-fixing hole 3 4 A first mating surface 3 B second element 3 1 B second duct 3 1 1 B second half return path 3 2 B Second positioning part 3 2 1 B Nail 3 3 B Semi-fixed part 3 3 1 B Semi-fixed hole 3 4 B Second mating surface R Rolling element 4 Groove cover G Fixing piece